two spring have force constant k1 and k2 (k1 > k2).on which spring is more work  done if,
a) they are stretched by the same force and 
b) they are stretched by the same amount

Dear Student ,
Here is a link which will help you to solve this question with proper explanation .
https://www.meritnation.com/ask-answer/question/two-springs-have-force-constant-k1-and-k2-k1k2-each-s/work-energy-and-power/8570523

When they are stretched by same amount then just take that x1 =x2 .
Regards

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